DSpace Collection: А data repository of datasets produced by researchers from UKIMА data repository of datasets produced by researchers from UKIMhttp://hdl.handle.net/20.500.12188/119712024-05-25T10:31:00Z2024-05-25T10:31:00ZDataset for Polarization of Balmer alpha radiation resulting from H^++H collisions in Debye plasmasJakimovski, DraganJanev, Ratkohttp://hdl.handle.net/20.500.12188/245872022-11-27T22:34:36Z2015-01-01T00:00:00ZTitle: Dataset for Polarization of Balmer alpha radiation resulting from H^++H collisions in Debye plasmas
Authors: Jakimovski, Dragan; Janev, Ratko
Abstract: The linear polarization degree of Balmer alpha radiation resulting from Hþ þ Hð1sÞ collisions in a hot, dense weakly coupled plasma is studied in the energy range 1–140keV=u by adopting the Debye-H€uckel potential to represent the screened interaction between charged plasma particles. Due to the energy splitting of nl hydrogen states in the short range Debye-Huckel potential, the Balmer alpha radiation contains three components corresponding to 3s-2p, 3p-2s, and 3d-2p transi- tions, of which only the last two can be linearly polarized. For calculation of 3lm excitation and electron capture cross sections, the two-center expansion atomic orbital close coupling method is used for a number of Debye screening lengths. The effects of plasma screening on the 3lm cross sections are manifested in significant changes of their magnitudes and energy behavior with respect to the ones in the unscreened case, producing significant changes in the polarization degree of Balmer 3p-2s and 3d-2p lines.
Description: The data files attached to this paper follows the information presented on selected panels
from published figures. Some of them may contains additional data, regarding state energies and
polarization, which were not presented in the published version of the paper due to
page limitations. All energies are in units of keV/u and sections in units of 10^{-16} cm^2
unless explicitly noted otherwise.
Each data file is an ASCI text file with several lines of comments at their beginning with short
explanation for columns, units, missing or otherwise unacceptable data, etc. Due to various
restrictions not all energy points are available - hence the slots with missing data.
The name of the file starts with a number, and short explanation of its
content for an easy orientation. In the following we list them for convenience of the user
The radial electron densities (Fig 1) and polarization values (Fig 8, 9 and 10) are calculated from these data.
All calculations were performed on HPC at FINKI, Skopje. The authors gratefully acknowledge
the support of people in charge of smooth running of the cluster and prof. B. Jakimovski, PhD in
particular for helpful advise on many occasions.
For further details regarding computations and data itself: dragan.jakimovski@gmail.com2015-01-01T00:00:00ZDataset for Antiproton-impact ionization of hydrogen atom with Yukawa interactionJakimovski, DraganGrozdanov, TashkoJanev, Ratkohttp://hdl.handle.net/20.500.12188/245862022-11-27T21:41:08Z2018-01-01T00:00:00ZTitle: Dataset for Antiproton-impact ionization of hydrogen atom with Yukawa interaction
Authors: Jakimovski, Dragan; Grozdanov, Tashko; Janev, Ratko
Abstract: The process of ionization of hydrogen atom by antiproton impact is studied when the interparticle
interactions in the system are described by screened interactions of Yukawa type. The collision dynamics is described by the semiclassical atomic-orbital close-coupling method in which the bound atomic states and positive energy continuum pseudostates are determined by diagonalization of target Hamiltonian in a sufficiently large even-tempered basis to ensure convergence of the results at each value of the screening length λ of the interaction. With decreasing the screening length, the bound states in the Yukawa potential become unbound, thus increasing the number of continuum pseudostates. At low collision energies, this leads to the increase of the ionization cross section. It is observed that the energies of pseudostates, generated by the exit of nl bound states in the continuum, at certain critical values λcnl exhibit series of avoided crossings when λ is varied. The avoided crossings appear between the (n + k)l and (n + k + 1)l (n =1, 2, 3, . . . ; k = 0, 1, 2, . . .) states at screening lengths close to the critical screening length λcnl . The avoided crossings become increasingly less pronounced with increasing n, k and l. The matrix elements for the (n + k)l − (n + k + 1)l transitions at the avoided crossings λ(n+k+1)l exhibit maxima and are reflected x,(n+k)l in the structure of the cross sections for population of the lower nl pseudostates. These structures are, however, smeared out in the total ionization cross section.
Description: he data files attached to this paper follows the information presented on selected panels
from published figures. Some of them may contains additional data, regarding state energies and charge transfer
sections to higher states, which were not presented in the published version of the paper due to
page limitations. All energies are in units of keV/u and sections in units of 10^{-16} cm^2
unless explicitly noted otherwise.
Each data file is an ASCI text file with several lines of comments at their beginning with short
explanation for columns, units, missing or otherwise unacceptable data, etc. Due to various
restrictions not all energy points are available - hence the slots with missing data.
The name of the file starts with a number, and short explanation of its
content for an easy orientation. In the following we list them for convenience of the user Files from No.4 to No.7 contains data for ionization sections at fixed sreening lengths (in a.u.)
and files No.8 and No.9 contains data for ionization sections at two fixed energies (in keV).
All calculations were performed on HPC at FINKI, Skopje. The authors gratefully acknowledge
the support of people in charge of smooth running of the cluster and prof. B. Jakimovski, PhD in
particular for helpful advise on many occasions.
For further details regarding computations and data itself: dragan.jakimovski@gmail.com2018-01-01T00:00:00ZDataset for land and elevation cover that can be used in propagation prediction and radio link and network performance over the territory of N.Macedonia.Latkoski, PeroGavrilovska, Liljanahttp://hdl.handle.net/20.500.12188/200732022-06-30T10:23:12Z2022-01-01T00:00:00ZTitle: Dataset for land and elevation cover that can be used in propagation prediction and radio link and network performance over the territory of N.Macedonia.
Authors: Latkoski, Pero; Gavrilovska, Liljana
Abstract: The files in the dataset contain the complete dataset for land and elevation cover that can be used in propagation prediction and radio link and network performance over the territory of N.Macedonia. In RF prediction a balance is required between calculation time and the accuracy. The number of records are the number of points between the TX and the RX unit that are taken in account in a simulation. More points will result in a higher accuracy and will take a long time to calculate. Less points will have a low accuracy but require a short calculation time. The provided dataset represent a compromise in this manner, when producing country-wide calculations.
Description: Each data file is in XYZ format. XYZ files contain latitude, longitude and elevation of each point separated by spaces. Files are organized by latitude values from 40 to 42 degrees N, and latitude from 20 to 23 degrees E.2022-01-01T00:00:00ZDatasets for Electron capture, excitation and ionization processes in He2+–H collisions in dense quantum plasmasJakimovski, DraganRatko K. Janevhttp://hdl.handle.net/20.500.12188/192812022-06-23T11:46:49Z2018-01-01T00:00:00ZTitle: Datasets for Electron capture, excitation and ionization processes in He2+–H collisions in dense quantum plasmas
Authors: Jakimovski, Dragan; Ratko K. Janev
Abstract: Electron capture, excitation and ionization processes in He2+–H collisions taking place in quan- tum plasmas are studied by employing the two-center atomic orbital close coupling (TC-AOCC) method. The Debye-Hu ̈ckel-cosine (DHC) potential is used to describe the plasma screening effects on the Coulomb interaction between charged particles. The properties of eigenenergies of hydrogen-like atom with DHC potential are investigated as function of the screening length of the potential. It is found that the bind- ing energies of nl states decrease with decreasing the screening length of the potential. The dynamics of excitation, electron capture and ionization processes in He2+–H collision system is investigated when the screening length of the potential varies for a wide collision energy range. The TC-AOCC cross sections are compared with those for the pure Coulomb potential and, for the total electron capture, with the results of classical trajectory Monte Carlo method.
Description: The data files attached to this paper follows the information presented on the corresponding
figures. Some of them may contains additional data, regarding state energies and charge transfer
sections to higher states, which were not presented in the published version of the paper due to
page limitations. All energies are in units of keV/u and sections in units of 10^{-16} cm^2
unless explicitly noted otherwise. Kappa is in units of a_0. E+00 denote base of 10, i.e. 10^{00}. Each data file is an ASCI text file with several lines of comments at their beginning with short
explanation for columns, units, missing or otherwise unacceptable data, etc. Due to various
restrictions not all energy points are available for different values of kappa (and vice versa) -
hence the slots with missing data. All calculations were performed on HPC at FINKI, Skopje. The authors gratefully acknowledge
the support of people in charge of smooth running of the cluster and prof. B. Jakimovski, PhD in
particular for helpful advise on many occasions.
For further details regarding computations and data itself: dragan.jakimovski@gmail.com
The name of the file starts with a number, and short explanation of its
content for an easy orientation. In the following we list them for convenience of the user2018-01-01T00:00:00Z